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Description

Pycnanthemum incanum

Also known as:

hoary mountainmint

,

silverleaf mountain mint

,

common mountain mint

Scientific Synonyms:

Description

Pycnanthemum incanum is a clump-forming mint, with rigid green and reddish stems, that grows to a height of 4 feet. The leaves are broad-ovate, up to 3" long, hoary beneath (hence the common name), and are distinctly white below the flowers. It produces dense terminal clusters of white flowers, spotted with pink, that are up to 1 1/2" across. All parts of the plant emit a strong mint fragrance when rubbed or crushed.

Cultivation

Easy to grow under typical garden conditions, it prefers full to part-sun, and moist to slightly dry soil. A good choice to naturalize large areas in combination with other wildflowers, or as a dense border planting. It readily spreads in open areas with little competition, and might be too large and aggressive for a small garden if not kept in check. The blooming period lasts over a month, beginning mid-summer. Zones 5-8

Propagation

Easy to propagate from cuttings or division. Seeds are tiny and can be difficult to collect.

Additional Notes

The species is divided into two subordinate taxa: Pycnanthemum incanum var. incanum in the north, and Pycnanthemum incanum var. puberulum in the south.